claudia cowan is live in san francisco with more on all of this. what's driving the search? >> reporter: well, jenna, you can start with china's booming economy and rich middle class. it means for the first time in china's history millions of families can afford to send their children to american colleges and universities, help them get those valuable degrees and start networking, and these families are willing to the pay full freight, often tens of thousands of dollars in tuition while their children are free to study what they want. >> we have a lot of freedom to choose classes, professors, your career path, academic path whereas in china everything is set already. >> reporter: there are now 194,000 chinese students enrolled in this cub. jenna, that is one out of every four international student. jenna: so a lot of benefits, but what about the challenges associate with the this type of, i guess you can call it aggressive recruiting? >> well, on some campuses, you're right. it's been a culture shock, and one of the biggest concerns is when these chinese students have troubl